#include<bits/stdc++.h>
using namespace std;
int n,t,ans;
map<int,int>cnt;
int main(){
    freopen("duel.in","r",stdin);
    freopen("duel.out","w",stdout);
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>t;
        cnt[t]++;
        ans=max(ans,cnt[t]);
    }
    cout<<ans;
    return 0;
}
